Observation of narrow-band noise accompanying the breakdown of insulating states in high Landau levels

Details Observation of narrow-band noise accompanying the breakdown of insulating states in high Landau levels Observation of narrow-band noise accompanying the breakdown of insulating states in high Landau levels

2002-10-02

arxiv.org/abs/cond-mat/0210069v2

Phys. Rev. Lett. 90, 226803 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.226803

Recent magnetotransport experiments on high mobility two-dimensional electron systems have revealed many-body electron states unique to high Landau levels. Among these are re-entrant integer quantum Hall states which undergo sharp transitions to conduction above some threshold field. Here we report that these transitions are often accompanied by narrow- and broad-band noise with frequencies which are strongly dependent on the magnitude of the applied dc current.

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